Hydrogeochemistry of seasonal variation of Urmia Salt Lake, Iran

Aquatic Biosystems

Table 1 Results of orientation stage analysis: * (g/l), ** (ppm), 15 Oct. 2002

Samples Elements	Salt Pool water	Vs6	Vm6	Vd6	Ks7	Km7	Cs7	Cm7	Ps7	Pm5	Pd5	Average
Mg*	5.7	6.6	6.6	6.7	6.6	6.8	6.7	6.7	6.5	6.5	6.4	6.6
Ca*	1.06	1.22	1.21	1.20	1.22	1.23	1.24	1.20	1.20	1.20	1.0	1.21
K*	0.93	1.11	1.09	1.10	1.10	1.11	1.11	1.12	1.08	1.07	1.08	1.10
Na*	108	88	88	88	87	91	90	91	87	87	87	88
SO₄ *	11.8	14	14.1	14.1	14.4	14.6	14.6	14.3	13.9	14.1	14	14.2
Cl*	158	153	152	152	153	163	152	153	153	153	152	153
Br**	3.0	1.5	1.5	1.5	1.5	2.2	2.2	1.5	1.5	1.6	1.4	1.6
F**	40	50	45	45	45	50	50	45	45	50	45	47
I**	Nd	Nd	Nd	Nd	Nd	Nd	Nd	Nd	Nd	Nd	Nd	Nd
Li**	15	14	13	13	13	14	14	14	13	14	13	13.5
B**	56	73	76	73	78	80	75	80	75	78	78	77
HCO₃**	220	285	285	280	280	285	280	285	280	290	290	284
TDS*	330	283	281	284	287	293	280	290	285	288	283	285
pH	6.9	6.7	6.8	6.8	6.7	6.8	6.8	6.7	6.8	6.8	6.7	6.75
	450	390	390	390	395	400	380	400	390	400	390	392
Sp.G	1.21	1.18	1.18	1.18	1.18	1.18	1.19	1.19	1.18	1.18	1.17	1.18